Check device for loom picker-sticks.



No. 7||,s9s. Patented Oct. 2|, mm. m. DUMUNT.

\ CHECK DEVICE FOR LOOM PICKER STICKS.

(Application filedleb. 17, 1902.)

(N0 Model.)

UNITED STATES PATENT OFFICE.

MAURICE DUMONT, OF AURORA, ILLINOIS.

CHECK DEVICE FOR .LOOM PICKER-S'I TICKS.

SPECIFICATION forming part Of LbtbGI'S Batent N 711,698, dated October 21, 1902. Application filed February 17,1902. senate. 94,502. wo an.)

This invention relates to check devices for the picker-sticks of looms, designed to absorb the blow of the shuttle on the picker-stick at the outer limit of its throw and to therethrough indirectly arrest the outward movementof the shuttle.

Among the objects of my invention is to provide a device of this character which will prevent rebound of the picker-stick and shuttle when the shuttle is thrown outwardly against the picker-stick, so that the shuttle arrested thereby will stop at the outer limit of its movement and in contact with the picker, whereby when the picker is returned View of one side of the lay of a loom, illus-- trating the upper end of the picker-stick and my improved check device for limiting the outward throw of the --picker-stick and the shuttle. Fig. 2 is a horizontal section taken on line 2 2 of Fig. 1. Fig. 3 is a detail plan section taken through the picker-stick and the supporting-brackets for the check device, said View also showing the check-strap partially in section. Fig. l is a partial end view of the device shown in Fig.1.

fragmentary detail illustrating the means ofconnecting the spring with the check-strap.

As shown in said drawings, A designates as a whole a part of the lay of a loom, embracing a shuttle-race B, reed C, and a picker Fig. dis a stick D, which carries at its upper end on its inner margin the usual picker d. .The upper end of said picker-stick extends-through a slot b, formed between guide-boards B B at the end of the shuttle-race.

B designatesa binder-board forming part of the shuttle-box, which is located at the end of the shuttle-race. Said binder is held in place by means of an arm E on the end of a horizontal rotative spring-pressed protectorshat't'E, suitably journaled in the lay-frame, the upper end of the arm bearing against the binder to hold the same in place and swing- .ing outwardly to permit the binder to spread when the shuttle enters the box in afamiliar manner.

F designates a buffer, which is located at the inner end of the slot 1) and designed to arrest the-inward throw of the picker-stick. Said bufier may be made of any usual or preferred form and in the form shown is usually made of leather and is inclined on its outer margin to correspond with the inclination of the picker-stick when the latter occupies its inwardly-inclined position.

Referring now to the construction of the check device which constitutes my present invention, G designates a flexible strap which is attached at one end to a downwardly-proj ectin g stationary armor bracket Gr, fixed rigidly to the lowermargin of one of the guideboards B and located near the outer limit of the throw of the picker-stick. Said strap is attached atits otherend to one end of a spiral contractile spring G in any suitable manner, and the other end of which spring is connected with a part which has adjustable connection with the lay-frame. As herein shown, said springis attached to a rod G which has adjustable sliding connection with a bracket G extending downwardly from the guideboard B opposite to the board to which the bracket or arm G is attached. Said bracket is provided with a horizontal opening through "which said rod extends, and the rod is held "in an adjusted relation to the bracket by means of a set-screw g extending upwardly through the bracket and impinging against vent the strap tearing out at its end, it is reinforced by an added thickness g of leather or other suitable material, around which the hook extends. The rod Gr extends through the spring, and therefore serves as a guide for the spring and prevents the same from sagging down when the spring is not under tension, which would be liable to cause breakage of the spring. The strap G, being attached to the vertical arm or bracket G, retains an edgewise vertical position, and as said strap is relatively short there is no tendency of the at the outer limit of its movement and that 1 the other end thereof is attached to a yielding part, such as the spring G the latter end only of the strap yields when the picker-stick is thrown outwardly against the same. After said picker-stick is first brought into contact with said strap, therefore, and before the movement of said stick, caused by the shuttle striking against the same, is entirely arrested the strap is caused to move or slide transversely across the margin of the picker-stick, and thereby create a frictional resistance, which aids the spring in arresting the movement of the picker-stick and shuttle, whereby said parts are brought more gradually to a rest than if such frictional resistance were not present. Furthermore, this construction materially aids in preventing rebounding of the picker-stick under the action of the spring, for the reason that, in the first place, the force of the blow of the shuttle is gradually absorbed by the spring and frictional resistance, and, secondly, tendency of the parts to rebound is counteracted by the friction due to the slipping of the strap across the pickerstick, said friction lessening the abrupt reaction of the spring, such as might in itself cause a rebound of the stick and the shuttle. As a result of this construction the pickerstick is gradually brought to a rest and does not rebound, so that the shuttle when it reaches the outer limit of its throw is brought to rest in contact with the picker, and when the picker-stick is again swung inwardly it acts through the picker to gradually start the shuttle on its inward throw and prevents pounding of the picker against the shuttle.

It will be understood that my improved check device may be employed upon all styles or types of looms, and for this purpose the device may be modified to adapt the same to different looms.

I claim as my invention 1. In aloom, the combination with apickerstick, of a check device for limiting the outward throw of the picker-stick, comprising a looped strap which is located in the path of the stick, said strap being attached at one end to a part rigid with the lay-frame, a spiral contractile spring to one end of which the other end of said strap is attached, and a rod to which the other end of said spring is attached, said rod having endwise-sliding, ad-

justable connection with the lay-frame for the purpose of varying the tension of said spring.

2. In a loom, the combination with a pickerstick, of a check device for limiting the outward throw of the picker-stick, comprising a looped strap which is located in the path of said stick and is attached at one end to a part rigid with the lay-frame, of a spiral spring connected with the other end of said strap, a rod to which said spring is attached, said rod being adj ustably connected at one end with the lay-frame and extending through said spring.

In testimony that I claim the foregoing as myinvention I affix my signature, in presence of two witnesses, this 25th day of January, A. D. 1902.

MAURICE DUMONT.

Witnesses:

WILLIAM L. HALL, GEORGE R. WILKINS. 

